The mansion, which was bought in an unfinished state by Peter Sperling of the Apollo Group (which owns the University of Phoenix) in 2004, was originally listed at $65 million in 2007.

When Sperling, whose father John started the University of Phoenix, bought the house, it was slightly less-finished than it is now. He did some work on it, and then stopped for unknown reasons. The house has been on and off the market since with little interest, Curbed SF writes.

Sperling is No. 828 on Forbes' World Billionaire list, and this Billionaire's Row location is just one of his many homes. Hopefully the rest, are furnished.